The element is essential to plant life, but its application in animal cells is Uncertain. Although it is actually itself not poisonous or dangerous, some silicates like asbestos are carcinogenic. Many silicon dioxide is used within the production of bricks and glass. Silica gel, a colloidal type of silicon dioxide, https://rivermlifa.wannawiki.com/768798/silicon_carbide_compound_no_further_a_mystery